package kr.hkit.powerjava.chapter26;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.InvalidPropertiesFormatException;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;

public class DBProperties {
	public static Properties loadPropertis(String propertiesFile){
		BufferedInputStream bis = null;
		Properties prop = null;
		
		try {
			bis = new BufferedInputStream(new FileInputStream(propertiesFile));
			prop = new Properties();
			prop.loadFromXML(bis);
		} catch (FileNotFoundException e) {
			System.err.print("파일이 존재하지 않음");
			e.printStackTrace();
		} catch (InvalidPropertiesFormatException e) {
			System.err.print("유효하지 않은 파일");
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			if(bis!=null)try{bis.close();bis=null;}catch(Exception e){}
		}
		return prop;
	}
	
	//savePropertis("test.prof", "user", "pass", "db");
	public static void savePropertis(String propertiesFile, String...value){
		BufferedOutputStream bos = null;
		Properties prop = null;
		
		try {
			bos = new BufferedOutputStream(new FileOutputStream(propertiesFile));
			prop = new Properties();
			
			prop.setProperty("DRIVER", value[0]);
			prop.setProperty("URL", value[1]);
			prop.setProperty("USER", value[2]);
			prop.setProperty("PASSWORD", value[3]);
			
			prop.storeToXML(bos, "DataBase Connection XML Property File");
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			if(bos!=null)try{bos.close();bos=null;}catch(Exception e){}
		}
		
	}
	
	
	public static void prnProperties(Properties prop){
		Set<Entry<Object, Object>>setmap = prop.entrySet();
		
		for(Entry<Object, Object> propty: setmap){
			System.out.printf("%s : %s\n", propty.getKey(), propty.getValue());
		}
	}
}
